Size: 13 x 9 x 2 cm/5.1 x 3.5 x 0.8 inch.Suitable for budgies, parakeets, cockatiels and other similar sized birds.the color of the quartz sands may vary from the picture- send by random. These bird perch rough-surface is made of natural quartz sands and pure nature wood inside with food grade color, non-toxic materials. Bwogue bird perch rough-surfaced provides excellent foot exercise and the hard coating on the surface keeps beaks and nails trimmed naturally, safety to chew as well. A fun place for your bird to relax and play. your bird will surely enjoy it. Each bird perch is fully outfitted with a metal wing nut and a built-in bolt. No extra equipment is required for installation and the perches deliver a secure hold.